Having trouble using List.Clean & List.FilterByBoolMask to remove empty/blank row values

1

Hello,

I’m getting a “Warning:Asked to convert non-convertible types” error message in a Family.Name node. I believe it is because the list that I’m feeding into it contains empty row values. I try to use the list.clean node beforehand to prevent it from happening but it doesn’t remove the empty row values like I had hoped. Is there a difference between empty/blank row values and null values? I also tried using a list.filterbyboolmask node instead of the list.clean node and still could not get the “Warning:Asked to convert non-convertible types” error message in a Family.Name node to stop.

Below are screenshots of the 2 graphs. The first graph works I believe because there are no empty/blank row values in the input list. I think the second graph is having trouble because there are empty/blank row values in the input list. I would greatly appreciate any guidance anyone can provide on how to get the second graph running like the first. Thanks in advance!

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Override Interior Elevation Crop Boundaries Lineweight 2018.10.31.dyn (73.8 KB)

2

Hi Daniel,

A simple way to clean up your data is to use the List.Clean node in Orchid package.

clean
clean.png1786×628 65.2 KB

2 Likes
3

Yes. It works. I guess I was using the wrong list.clean node. thanks for the code block too!

4

Flatten node may also work here. :slight_smile:

6

Good catch! I thought the issue might be due to how the items were originally collected.

7

Thanks for chiming in. I’m curious: what is the difference between a null list item and a blank list item? What action results in a null list item populating a list vs. what action results in a blank list item populating a list?